pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93455-how_about_you.ps) >>/Users/jc/w/tmp/Tune-93455-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/jazz/how_about_you.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-93455-get.log 6325 Log file, useful mostly for debugging
Tune-93455-how_about_you.abc 1677 ABC music file with the extracted tune(s)
Tune-93455-how_about_you.ps 42964 PostScript
Tune-93455-how_about_you.txt 1677 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.